Cell Structure and Function 1. The Cell Theory 1. The Cell Theory A. All organisms composed of one or more cells A. All organisms composed of one or more.

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Presentation on theme: "Cell Structure and Function 1. The Cell Theory 1. The Cell Theory A. All organisms composed of one or more cells A. All organisms composed of one or more."— Presentation transcript:

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Cell Structure and Function 1. The Cell Theory 1. The Cell Theory A. All organisms composed of one or more cells A. All organisms composed of one or more cells B. Cell is smallest living organizational unit B. Cell is smallest living organizational unit C. Cells arise only from division of other cells C. Cells arise only from division of other cells 1. The Cell Theory 1. The Cell Theory A. All organisms composed of one or more cells A. All organisms composed of one or more cells B. Cell is smallest living organizational unit B. Cell is smallest living organizational unit C. Cells arise only from division of other cells C. Cells arise only from division of other cells

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Eukaryotic cell structure Organelles Endoplasmic reticulum consists of folded membranes attached to the nucleus Rough ER is site of protein synthesis and protein secretion. Proteins made here are processed and shipped out of the cell Organelles Endoplasmic reticulum consists of folded membranes attached to the nucleus Rough ER is site of protein synthesis and protein secretion. Proteins made here are processed and shipped out of the cell

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Plant & Animal Cells Differences Plants have Cell wall – provides strength & rigidity Have chloroplasts, photosynthetic Animals have Other organelle not found in plants (lysosomes formed from Golgi) Centrioles, important in cell division Differences Plants have Cell wall – provides strength & rigidity Have chloroplasts, photosynthetic Animals have Other organelle not found in plants (lysosomes formed from Golgi) Centrioles, important in cell division

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Brief Look at Viruses Viruses are acellular Not considered to be living Cause serious diseases in most organisms Viruses are acellular Not considered to be living Cause serious diseases in most organisms